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Towards Optimal Combined Source-Channel CodingAuthors: Apoorv Reddy,Garimella Ramamurthy Date: 2013-03-26 Report no: IIIT/TR/2013/20 AbstractX is a finite discrete memoryless random source whose output probability distribution is known. A binary variable length encoder (like a huffman encoder or an arithmetic encoder) encodes the source symbols into corresponding binary variable length codes (vlc) of lengths respectively. These information words have to be transmitted over a discrete memoryless noisy channel. So to provide sufficient protection against channel errors, these variable length information words are converted into fixed-length channel codewords. The partial Hamming distance for such variable length codes is defined and then a recursive algorithm to find the extended fixed-length channel codewords is formulated. Full report: pdf Centre for Communications |
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